This is one of the quietest new releases of SIHH, but arguably one of our favorites. There is a brand new Lange 1. Most people didn't really pick up on it because aesthetically, the new Lange 1 looks just like the old Lange 1 (with two slight, slight differences I'll get into). But in fact, the watch you see here has an entirely brand new, built from the ground-up, in-house caliber that offers some subtle but meaningful upgrades. Let's get into it.

This is one of the quietest new releases of SIHH, but arguably one of our favorites. There is a brand new Lange 1. Most people didn't really pick up on it because aesthetically, the new Lange 1 looks just like the old Lange 1 (with two slight, slight differences I'll get into). But in fact, the watch you see here has an entirely brand new, built from the ground-up, in-house caliber that offers some subtle but meaningful upgrades. Let's get into it.

The caliber inside the Lange 1 was among Lange's first ever developed, meaning it has been a quarter century since the design of this caliber began. The men and women of Glashütte felt it was time, though no one asked for it, to give its most iconic model an internal upgrade. So, beginning with this model year, the Lange 1 will house caliber L121.1, the 50th new caliber since its re-birth two decades ago. Lange is quick to point out that the goals and aesthetics of this new caliber are indeed the same as the original, this is not merely an upgrade, but a whole movement.

We still have a double-barrel giving the watch 72 hours of power reserve. But we now also have a larger, free-sprung balance wheel with completely in-house hairspring and eccentric poising weights. Further, the trademark outsize date of the Lange 1 no longer offers a slow creep, but an instantaneous jump at midnight. The power needed for this jump is stored up within the movement hours before 12 a.m. each day.

And when the watch's power reserve dwindles down to nothing, the seconds hand will stop at zero every single time. This will allow for the most accurate re-setting each time you wind the watch back up. All of these little traits are extremely welcomed, and what makes them even cooler is that not a single person asked for them.

That is indeed the beauty of A. Lange & Söhne – they do things not because they have to, but because they want to. While their brother and sister brands are recycling the same old movements in new cases, Lange is building entirely new movements for the same cases just because they feel like they should.

The case diameter of the Lange 1 remains the same at 38.5 mm, and the only barely noticeable design difference between this model and the outgoing piece is a slightly thinner bezel, as well as slightly less pronounced font choices for "A. Lange & Söhne" at 12 o'clock. The new Lange 1 will be available in yellow gold with champagne dial (191.021), rose gold with argente dial (191.032), and platinum with rhodium dial (191.025). Pricing for the two gold pieces will be 29,800 euro, and in platinum 42,300.